Cisco ASA MIB issue/question

[AndyZabbix]

Hello all,

I have the following problem. I have Zabbix setup to monitor an ASA and some items display the following: snmp_parse_oid(): cannot parse OID "ENTITY-MIB::entPhysicalFirmwareRev.1".
Zabbix is running on CentOS 8 with no access to internet.

I did the following:
1. SNMPWALK
[[email protected] mibs]# snmpwalk -v2c -c ****** 192.168.1.254 ENTITY-MIB::entPhysicalFirmwareRev.1.
ENTITY-MIB::entPhysicalFirmwareRev.1.: Unknown Object Identifier (Sub-id not found: entPhysicalIndex -> )

2. Checked the MIBs in
/usr/local/share/snmp/mibs/
/usr/share/snmp/mibs/
and
/root/Mibs/ASA/

ENTITY-MIB.my is present in all of them and looks like the default setting with :
entPhysicalName SnmpAdminString,
entPhysicalHardwareRev SnmpAdminString,
entPhysicalFirmwareRev SnmpAdminString,
entPhysicalSoftwareRev SnmpAdminString,
entPhysicalSerialNum SnmpAdminString,
entPhysicalMfgName SnmpAdminString,
entPhysicalModelName SnmpAdminString,
entPhysicalAlias SnmpAdminString,
entPhysicalAssetID SnmpAdminString,

By the way all of these are displaying the same error.

3. Searched for SnmpAdminString which should come from SNMP-FRAMEWORK-MIB.my
but this happens
[[email protected] mibs]# snmpwalk -v2c -c ****** 192.168.1.254 SNMP-FRAMEWORK-MIB::SnmpAdminString.1.
SNMP-FRAMEWORK-MIB::SnmpAdminString.1.: Unknown Object Identifier

Soooo have you guys encountered something like this?
The OID exists on the ASA is that the Zabbix cannot find it in the MIBs
If i do a snmpwalk for the OID this happens:

[[email protected] mibs]# snmpwalk -v2c -c ****** 192.168.1.254 1.3.6.1.2.1.47.1.1.1.1.11.
1.3.6.1.2.1.47.1.1.1.1.11.: Unknown Object Identifier (Sub-id not found: mib-2 -> )

All hints are much appreciated.

Thanks,
stay healthy,
Andy